Implementation of a cognitive radio front-end using optically reconfigurable antennas

Author

Tawk, Y. ; Al-Husseini, M. ; Hemmady, S. ; Albrecht, A.R. ; Balakrishnan, G. ; Christodoulou, C.G.

Author_Institution

Electr. & Comput. Eng. Dept., Univ. of New Mexico, Albuquerque, NM, USA

fYear

2010

fDate

20-24 Sept. 2010

Firstpage

294

Lastpage

297

Abstract

This paper presents a reconfigurable radio front-end antenna scheme suitable for cognitive radio communications. Our scheme comprises of an UWB antenna structure (antenna-1) and a reconfigurable antenna structure (antenna-2) incorporated together on the same substrate. The UWB antenna-1 is used for channel sensing while the reconfigurable antenna-2 is designed to frequency-hop between pre-determined communication channels. The reconfiguration of antenna-2 is achieved by using photoconductive switches which are selectively illuminated by laser light from a series of integrated laser diodes. A prototype was fabricated and tested to prove the applicability of our proposed radio front-end scheme.

Keywords

cognitive radio; photoconducting switches; semiconductor lasers; software radio; ultra wideband antennas; UWB antenna structure; cognitive radio communication; integrated laser diode; laser light; optically reconfigurable antenna; photoconductive switches; reconfigurable antenna structure; reconfigurable radio front-end antenna scheme; Antenna measurements; Cognitive radio; Frequency measurement; Loss measurement; Sensors; Ultra wideband antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetics in Advanced Applications (ICEAA), 2010 International Conference on

Conference_Location

Sydney, NSW

Print_ISBN

978-1-4244-7366-3

Type

conf

DOI

10.1109/ICEAA.2010.5651539

Filename

5651539